Every serviceman knows the moment they go to a defence force psychologist their military career is over, says Afghanistan veteran Geoff Evans.

"It shouldn't be that way, and Defence has worked hard to turn this attitude around, but it's the reality," said Mr Evans, who was medically discharged after being wounded during his second tour in 2011. Mr Evans has post-traumatic stress disorder (PTSD), a mental illness brought on by exposure to trauma and stress. It came from seeing two of his mates killed in front of him.